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https://issues.apache.org/jira/browse/DISPATCH-1276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16793864#comment-16793864
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ASF GitHub Bot commented on DISPATCH-1276:
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ganeshmurthy commented on pull request #463: DISPATCH-1276 - Added a cleanup 
function qdrc_address_endpoint_cleanu…
URL: https://github.com/apache/qpid-dispatch/pull/463
 
 
   
 
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> Spontaneous drop of client connection causes crash on edge router
> -----------------------------------------------------------------
>
>                 Key: DISPATCH-1276
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1276
>             Project: Qpid Dispatch
>          Issue Type: Bug
>          Components: Routing Engine
>    Affects Versions: 1.5.0
>         Environment: Proton version 0.28.0
>            Reporter: Ken Giusti
>            Assignee: Ganesh Murthy
>            Priority: Blocker
>             Fix For: 1.6.0
>
>         Attachments: 0001-delete-me.patch
>
>
> I can cause the router to crash by applying the attached patch, rebuilding 
> with CMAKE_BUILD_TYPE=Debug, and running cmake -VV -R tests_edge_router
> This will cause a bunch of tests to fail, but then a crash will occur with 
> the following traceback (on current master):
> #0  0x00007f4dbc571e82 in qdr_forward_deliver_CT (core=0x2202e60, 
> out_link=0x9999999999999999, out_dlv=0x7f4d9034de68)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/forwarder.c:201
> #1  0x00007f4dbc568d98 in qdrc_endpoint_send_CT (core=0x2202e60, 
> ep=0x7f4da009f168, dlv=0x7f4d9034de68, presettled=true)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/core_link_endpoint.c:126
> #2  0x00007f4dbc591364 in qdrc_send_message (core=0x2202e60, 
> addr=0x7f4da0031f68, endpoint=0x7f4da009f168, insert_addr=false)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/edge_addr_tracking/edge_addr_tracking.c:181
> #3  0x00007f4dbc5916d0 in on_addr_event (context=0x7f4da0050050, 
> event=524288, addr=0x7f4da0031f68)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/edge_addr_tracking/edge_addr_tracking.c:249
> #4  0x00007f4dbc5686b6 in qdrc_event_addr_raise (core=0x2202e60, 
> event=524288, addr=0x7f4da0031f68)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/core_events.c:114
> #5  0x00007f4dbc57c325 in qdr_core_unbind_address_link_CT (core=0x2202e60, 
> addr=0x7f4da0031f68, link=0x22c49a8)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core.c:562
> #6  0x00007f4dbc567932 in qdr_link_inbound_detach_CT (core=0x2202e60, 
> action=0x7f4d9003e268, discard=false)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/connections.c:1660
> #7  0x00007f4dbc57e179 in router_core_thread (arg=0x2202e60) at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:148
> #8  0x00007f4dbbe84594 in start_thread () from /lib64/libpthread.so.0
> #9  0x00007f4dbb133f4f in clone () from /lib64/libc.so.6
> And on 1.5.0:
> #0  0x00007f30e6bc55dc in qdrc_endpoint_delivery_CT (core=0x14219a0, 
> endpoint=0x9999999999999999, message=0x7f30c4226468)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/core_link_endpoint.c:137
> #1  0x00007f30e6bed632 in qdrc_send_message (core=0x14219a0, 
> addr=0x7f30cc031f68, endpoint=0x9999999999999999, insert_addr=false)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/edge_addr_tracking/edge_addr_tracking.c:179
> #2  0x00007f30e6bed9c4 in on_addr_event (context=0x7f30cc050050, 
> event=524288, addr=0x7f30cc031f68)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/modules/edge_addr_tracking/edge_addr_tracking.c:249
> #3  0x00007f30e6bc4e8d in qdrc_event_addr_raise (core=0x14219a0, 
> event=524288, addr=0x7f30cc031f68)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/core_events.c:114
> #4  0x00007f30e6bd868a in qdr_core_unbind_address_link_CT (core=0x14219a0, 
> addr=0x7f30cc031f68, link=0x7f30c80ac568)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core.c:504
> #5  0x00007f30e6bc40c5 in qdr_link_inbound_detach_CT (core=0x14219a0, 
> action=0x161bba8, discard=false)
>     at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/connections.c:1657
> #6  0x00007f30e6bda368 in router_core_thread (arg=0x14219a0) at 
> /home/kgiusti/work/dispatch/qpid-dispatch/src/router_core/router_core_thread.c:124
> #7  0x00007f30e64e1594 in start_thread () from /lib64/libpthread.so.0
> #8  0x00007f30e5790f4f in clone () from /lib64/libc.so.6
> It appears as though a endpoint context for the edge_addr_tracking module has 
> been referenced after it has been freed.
> On further testing it appears as if the endpoint context is being referenced 
> by multiple qdr_link_t which should not happen.



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